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on rebuild, pre-size lookups based on previous sizes

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Karl Seguin
2026-03-19 11:46:58 +08:00
parent b7bf86fd85
commit 1695ea81d2
1 changed files with 15 additions and 5 deletions
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20
src/browser/StyleManager.zig
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@@ -100,16 +100,26 @@ fn rebuildIfDirty(self: *StyleManager) !void {
self.dirty = false;
errdefer self.dirty = true;
const id_rules_count = self.id_rules.count();
const class_rules_count = self.class_rules.count();
const tag_rules_count = self.tag_rules.count();
const other_rules_count = self.other_rules.items.len;
self.page._session.arena_pool.resetRetain(self.arena);
// Clear all buckets and reset document order
self.id_rules = .empty;
self.class_rules = .empty;
self.tag_rules = .empty;
self.other_rules = .empty;
self.next_doc_order = 0;
self.id_rules = .empty;
try self.id_rules.ensureUnusedCapacity(self.arena, id_rules_count);
self.class_rules = .empty;
try self.class_rules.ensureUnusedCapacity(self.arena, class_rules_count);
self.tag_rules = .empty;
try self.tag_rules.ensureUnusedCapacity(self.arena, tag_rules_count);
self.other_rules = try .initCapacity(self.arena, other_rules_count);
const sheets = self.page.document._style_sheets orelse return;
for (sheets._sheets.items) |sheet| {
self.sheetAdded(sheet) catch |err| {